The longer you watch the Barbary macaques on The Rock, the more you can witness and appreciate their social life. Invariably, you can spot the alpha male’s vigilant eyes sweeping over his troop. The adolescents are the most likely to jump on car windows, grab a purse or boldly approach for a handout. The youngsters are busy playing tag like kids on a playground. Couples show affection by combing through each other’s hair. While mothers are suckling their babies or embracing their children.